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INTERNATIONAL

STANDARD

Optical fibre cables -

Part 1-2: Generic specification - Basic optical cable test procedures - General guidance

INTERNATIONAL

ELECTROTECHNICAL

COMMISSION

ICS 33.180.10

ISBN 978-2-8322-9291-4

® Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor.

IEC 60794-1-2

Edition 5.0 2021-01

REDLINE VERSION

colour insideThis is a preview - click here to buy the full publication - 2 - IEC 60794-1-2:2021 RLV © IEC 2021

CONTENTS

FOREWORD ........................................................................ ................................................... 3 INTRODUCTION ........................................................................ ............................................. 2

1 Scope ........................................................................

...................................................... 6

2 Normative references ........................................................................

.............................. 7

3 Terms and definitions ........................................................................

.............................. 7

4 General guidance ........................................................................

.................................... 7

4.1 Test procedure format ............................................................................................. 7

4.2 Standard atmospheric conditions ............................................................................ 7

4.3 Symbols and abbreviated terms .............................................................................. 8

4.4 Safety and environmental aspects........................................................................... 8

4.5 Calibration ........................................................................

...................................... 8

4.5.1 Calibration process .......................................................................................... 8

4.5.2 Assessment of uncertainties ............................................................................ 8

4.6 Preconditioning ........................................................................

............................... 9

4.7 Guide to qualification sampling ............................................................................... 9

4.8 Optical launch conditions ........................................................................................ 9

4.9 Standard optical test wavelengths ........................................................................... 9

Annex A (informative) Cross-references between new and old test method numbers ........... 10 Bibliography ........................................................................ .................................................. 16 Table 1 - Document overview ........................................................................ ......................... 6

Table 2

- Standard optical test wavelengths ........................................................................... 9

Table 3

- Alternative optical test wavelengths ......................................................................... 9

Table A.1

- IEC 60794-1-1xx series ........................................................................ .............. 10

Table A.2

- IEC 60794-1-2xx series ........................................................................ .............. 11

Table A.3

- IEC 60794-1-3xx series ........................................................................ .............. 12

Table A.4

- IEC 60794-1-4xx series ........................................................................ .............. 12

Table A.5

- IEC 60794-1-21 method numbers ....................................................................... 12

Table A.6

- IEC 60794-1-22 method numbers ....................................................................... 14

Table A.7

- IEC 60794-1-23 method numbers ....................................................................... 14

Table A.8

- IEC 60794-1-24 method numbers ....................................................................... 15

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IEC 60794-1-2:2021 RLV © IEC 2021 - 3 -

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________

OPTICAL FIBRE CABLES -

Part 1-2: Generic specification -

Basic optical cable test procedures

General guidance

FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

may participate in this preparatory work. International, governmental and non-governmental organizations liaising

with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bo dies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights. This redline version of the official IEC Standard allows the user to identify the changes made t o the previous edition IEC 60794-1-2:2017. A vertical bar appears in the margin wherever a change has been made. Additions are in green text, deletions are in strikethrough red text. This is a preview - click here to buy the full publication - 4 - IEC 60794-1-2:2021 RLV © IEC 2021 International Standard IEC 60794-1-2 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical committee 86: Fibre optics. This fifth edition cancels and replaces the fourth edition published in 2017. This edition constitutes an technical revision. This edition includes the following significant technical change with respect to the previous edition: a) addition of cross-reference tables listing the new test method numbers and the previous test method numbers. The text of this International Standard is based on the following d ocuments:

CDV Report on voting

86A/2009/CDV 86A/2057/RVC

Full information on the voting for the approval of this International Standard can be found in the report on voting indicated in the above table. This International Standard is to be used in conjunction with IEC 60794-1-1. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 60794 series, published under the general title Optical fibre cables, can be found on the IEC website. The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the document will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTANT - The 'colour inside' logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. This is a preview - click here to buy the full publication

IEC 60794-1-2:2021 RLV © IEC 2021 - 5 -

INTRODUCTION

IEC 60794-1-2:2013 comprised a detailed cross-reference table to the new document set, and general guidance was given in IEC 60794-1-20. These two specifications have been combined in this document, which allows for IEC 60794-1-20 to be withdrawn. A decision has been reached to reorganize the IEC 60794-1-2 set of test methods into single- subject documents. This will be a migration as the existing test methods are revised and as new test methods are promulgated, rather than a wholesale rewrite. Part of this migration is a decision to maintain the traditional letter-number classification and to use a numbering system which maintains connection to the existing numbering system. The new test method numbering format has been agreed, in line with IEC Secretariat guidelines, to help the cross-referencing from old to new and that will make the updating of the relevant sectional and product specifications easier. Cross-reference tables listing the new test method numbers and the previous test method numbers have been included (see Annex A, Table A.1 to Table A.8).

The format agreed is as follows:

IEC 60794-1-Xnn

where

X = 2

nd digit of the old 2-digit reference; nn = incremental number (starting with old test method number).

For example:

IEC 60794-1-21 method E1 (tensile) becomes IEC 60794-1-101; IEC 60794-1-22 method F5 (water penetration) becomes IEC 60794-1-205; IEC 60794-1-23 method G7 (tube kinking) becomes IEC 60794-1-307; IEC 60794-1-24 method H2 (lightning) becomes IEC 60794-1-402. Annex A has been added to this document containing a cross-reference between the old and new number scheme. This is a preview - click here to buy the full publication - 6 - IEC 60794-1-2:2021 RLV © IEC 2021

OPTICAL FIBRE CABLES -

Part 1-2: Generic specification -

Basic optical cable test procedures

General guidance

1 Scope

This part of IEC 60794-1 applies to optical fibre cables for use with telecommunications equipment and devices employing similar techniques, and to cables having a combination of both optical fibres and electrical conductors. The prime objective of this document is to provide the end user with an overview about the content of different parts of the IEC 60794-1 series numbered -2X. Table 1 shows the different parts.

An objective of this

document is to define general requirements and methodology guidance applicab le to all of the cable test methods of IEC

60794-1 (all parts).

A second objective of this document is to provide the end user with an overview of the different test methods contained in the different parts of the IEC 60794-1 series, numbered -Xnn.

Table 1 shows the different parts.

Table 1 - Document overview

Test methods IEC reference Previous

compendium reference Test method category reference letter

General guidance IEC 60794-1-2 IEC 60794-1-2 -

Mechanical IEC 60794-1-1nn IEC 60794-1-21:2015 Methods E Environmental IEC 60794-1-2nn IEC 60794-1-22:2017 Methods F Cable elements IEC 60794-1-3nn IEC 60794-1-23:2019 Methods G Electrical IEC 60794-1-4nn IEC 60794-1-24:2014 Methods H

NOTE 1 The compendium reference specifications detailed in column 3 will continue in force until all of the test

methods therein are revised into the single-subject documents using the new numbering scheme.

NOTE 2 For existing test methods, "nn" is the test method number. For new test methods, "nn" is an incremental

number following the last test method number for that test category.

NOTE 3 Several numbers in the test method numbering sequence are missing. The reasons for these omissions

are historical. To avoid confusion, the existing numbering sequence has been retained. These documents define test procedures to be used in establishing uniform requirements for the geometrical, transmission, material, mechanical, ageing (environmental exposure) and climatic properties of optical fibre cables, and electrical requirements where appropriate. Throughout the documents, the wording "optical cable" can also include optical fibre units, microduct fibre units, etc. The secondary objective of this document is to provide the end user with useful guidance when testing optical fibre cables. This is a preview - click here to buy the full publication

IEC 60794-1-2:2021 RLV © IEC 2021 - 7 -

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60793-1-40, Optical fibres - Part 1-40: Attenuation measurement methods and test procedures - Attenuation IEC 60793-1-46, Optical fibres - Part 1-46: Measurement methods and test procedures -

Monitoring of changes in optical transmittance

IEC 60793-2-40, Optical fibres - Part 2-40: Product specifications - Sectional specification for category A4 multimode fibres IEC 60794-1-1:2015, Optical fibre cables - Generic specification - General IEC 60794-1-21:2015, Optical fibre cables - Part 1-21: Generic specification - Basic optical cable test procedures - Mechanical tests methods IEC 60794-1-22:2017, Optical fibre cables - Part 1-22: Generic specification - Basic optical cable test procedures - Environmental test methods IEC 60794-1-23:2019, Optical fibre cables - Part 1-23: Generic specification - Basic optical cable test procedures - Cable element test methods IEC 60794-1-24:2014, Optical fibre cables - Part 1-24: Generic specification - Basic optical cable test procedures - Electrical test methods

3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60794-1-1 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http://www.electropedia.org/ ISO Online browsing platform: available at http://www.iso.org/obp

4 General guidance

4.1 Test procedure format

The standard descriptive order of each test method is in general as follows: object, sample, apparatus, procedure, requirement, details to be specified, details to be reported. Additional clauses may be inserted, whilst maintaining this general order.

4.2 Standard atmospheric conditions

Two sets of allowable ambient conditions for cable testing are defined for use in testing in this document: a) Standard test conditions - temperature: 23 °C ± 5 ºC This is a preview - click here to buy the full publication

IEC 60794-1-2

Edition 5.0 2021-01

INTERNATIONAL

STANDARD

NORME

INTERNATIONALE

Optical fibre cables -

Part 1-2: Generic specification - Basic optical cable test procedures - General guidance

Câbles à fibres optiques

Partie 1-2: Spécification générique - Procédures fondamentales d'essais des câbles optiques - Recommandations générales IEC 60794
1 2 2021
01 en fr This is a preview - click here to buy the full publication - 2 - IEC 60794-1-2:2021 © IEC 2021

CONTENTS

FOREWORD ........................................................................ ................................................... 3 INTRODUCTION ........................................................................ ............................................. 5

1 Scope ........................................................................

...................................................... 6

2 Normative references ........................................................................

.............................. 7

3 Terms and definitions ........................................................................

.............................. 7

4 General guidance ........................................................................

.................................... 7

4.1 Test procedure format ............................................................................................. 7

4.2 Standard atmospheric conditions ............................................................................ 7

4.3 Symbols and abbreviated terms .............................................................................. 8

4.4 Safety and environmental aspects........................................................................... 8

4.5 Calibration ........................................................................

...................................... 8

4.5.1 Calibration process .......................................................................................... 8

4.5.2 Assessment of uncertainties ............................................................................ 8

4.6 Preconditioning ........................................................................

............................... 9

4.7 Guide to qualification sampling ............................................................................... 9

4.8 Optical launch conditions ........................................................................................ 9

4.9 Standard optical test wavelengths ........................................................................... 9

Annex A (informative) Cross-references between new and old test method numbers ........... 10 Bibliography ........................................................................ .................................................. 16 Table 1 - Document overview ........................................................................ ......................... 6

Table 2

- Standard optical test wavelengths ........................................................................... 9

Table 3

- Alternative optical test wavelengths ......................................................................... 9

Table A.1

- IEC 60794-1-1xx series ........................................................................ .............. 10

Table A.2

- IEC 60794-1-2xx series ........................................................................ .............. 11

Table A.3

- IEC 60794-1-3xx series ........................................................................ .............. 12

Table A.4

- IEC 60794-1-4xx series ........................................................................ .............. 12

Table A.5

- IEC 60794-1-21 method numbers ....................................................................... 12

Table A.6

- IEC 60794-1-22 method numbers ....................................................................... 14

Table A.7

- IEC 60794-1-23 method numbers ....................................................................... 14

Table A.8

- IEC 60794-1-24 method numbers ....................................................................... 15

This is a preview - click here to buy the full publication

IEC 60794-1-2:2021 © IEC 2021 - 3 -

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________

OPTICAL FIBRE CABLES -

Part 1-2: Generic specification -

Basic optical cable test procedures

General guidance

FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

may participate in this preparatory work. International, governmental and non -governmental organizations liaising

with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

quotesdbs_dbs33.pdfusesText_39

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